Rotary brush



Patented Sept. 30, 1924.

UNITED STATES IOHN ZIELINSK, HARLFED, CONNECTICUT.

ROTARY BRUSH.

Application filed, February le', 1924.. Serial No. 592,747.

To all whom t may concern Be it known that I, JOHN H. ZTELrNsKi, acitizen of Poland, residing at Hartford, in the county of Hartford andState of Connecticut, have invented certain new and useful Improvementsin Rotary Brushes, of which the following is a specification.

This invention relates to new and useful improvements in rotary brushesof the motor driven, self-contained type.

An important object of the invention is to form a rotary brush and itsdriving means into a single, compact unitary structure.

A further object of the invention is to provide novel means for handlingthe unitary structure referred to above.

A further object of the invention is to provide a novel brushconstruction and means for mounting and connecting the same upon a motorshaft. p

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawing forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a side elevational View of the device embodying thisinvention,

Figure 2 is a top plan view of the device shown in Fig. 1,

Figure 3 is a longitudinal, substantial central sectional view, partlyin elevation, of the apparatus shown in Figs. 1 and 2,

Figure 4 is an end elevational view of the front end of the apparatus,and

Figure 5 is an elevational view of the rear end of the apparatus.

In the drawing, wherein for the purpose of illustration is shown apreferred embodiment of this invention, the numeral 5 designates thehousing of an electric motor which is employed for driving the brushframe that will be described in detail at a later point. Projecting fromopposite ends of the motor housing 5 is the armature shaft 6 whichprojects from the casing 5 a greater distance at the front end of thestructure than at the rear end.

Suitably keyed to the longer projecting end of the armature shaft 6 is ahub 7 that is provided with an outwardly projecting annular flange 8 atits inner end. It will be noted that the motor housing 5 is of sub;stantially cylindrical shape.

In Fig. 3 there is best illustrated a brush frame 9 which is ofsubstantially barrel formation or having a greater diameter at itslongitudinal center than at the opposite ends. The forward end of thisbarrel.- shaped brush frame 9 is provided with an inwardly directedannular flange 1() which is rigidly connected with the flange 8 carriedby the hub 7 by means of the screws 11. The rear end 9a of thisbarrel-shaped frame 9 is open and has a diameter greater than thediameter of the motor casing 5. It will be seen by this constructionthat the barrelshaped brush frame 9 is entirely supported by the flange8 carried by the hub 7 which is suitably keyed to the armature shaft 6.The said brush frame is illustrated as being spaced from the cylindricalmotor easing 5 at all points. A guard plate 12 of arcuate formation incross-section, is shown as being provided, at its rear transverse edge,with depending, converging legs 13 which are secured at their outer endsto the rear end of the motor casing 5 by the screws 111. The fronttransverse edge of the guard plate 12 is illustrated in Figs. 1, 3 and 4as being provided with depending, converging legs 15 having an aperturedring 16 formed integrally with the outer ends of said legs 15. Thisapertured ring is shown in Fig. 8 as being loosely mounted upon thelonger end of the armature shaft 6. A handle strap 17 is illustrated asbeing secured to the upper face of the guard plate 12 and extendingtransversely of the same. Positioned be tween the outer end of the hub 7and the inner face of the apertured ring 16 is a spacer or washer 18while positioned outwardly of the outer face of the apertured ring 16 isa second spacer or washer 19. These washers or spacers 18 and 19 and theapertured ring 16 are retained in their respective positions upon thearmature shaft 6 by means of a collar 20 which is suitably keyed to theeXtreme outer end portion of the armature shaft 6.

The outer surface of the barrel-shaped brush frame 9 is illustrated asbeing provided with brush bristles or other suitable material 21. It isto be understood that these brush bristles or other suitable brushmaterial may be secured to the barrel-shaped brush frame 9 in anydesired manner.

In Figs.v 1, 3 and 5, there are illustrated electric wires 22 which areprojecting outwardly of the rear end of the motor cas- 'ing The motor isintended to be supplied With electricity through these Wires.

lt is believed that the construction and operation of this rotary brushwill be apparent from the above detail description. It might be Well tonote, however, that the operator et' the brush may insert his handthrough the loop of the handle strap 17 and that after the electricityhas been turned on. the armatureV shaft 6 will be caused to rotate andwill carry the barrel-shaped brush trame With it. It is not intended toliniit the use of this brush to any particular Work :tor any desiredtorni ot brush material. may be secured to the outer face ot the brushtrame 9' for the purpose of adapting` the apparatus to be used forshiningshoes, brushing clothes, Washing Windows or Woodwork. scrubbingfloors, etc.

It is to be understood that the torm of this invention herewith shownand described is to be taken as a preferred example of the same, andthat such changes in the shape, size, and arrangement of parts may beresorted to Without departing from the spirit of the invention as fallWithin the scope o't the subjoined claims.

'Having thus described the invention, I claim l. ln a rotary brush ofthe type described, an electric motor including a cylindrical casing andan armature shaft projecting from one end thereon a barrel-shaped brushAtrame loosely encircling said motor casing, means connecting one end ofsaid brush frame to the projecting end of said shaft, a guard plate,means rigidly connecting one end ot said guard plate to one end of themotor casing, means loosely connecting the other end ot said guard plateto the projeeting` end ot said armature shaft. and a handle strapcarried by said guard plate for permitting the rotary brush to bemanually operated.

2. In a rotary brush of tht` type described. au electric motor includinga cylindrical casing and an armature shaft projecting from one endthereof. a hub having an annular outwardly projecting flange keyed tothe projecting end of said armature. shaft, a barrel-shaped brush frameloosely encircling said motor casing and having an annular inwardlydirected flange termed at one end thereof connected to the flangecarried by the said hub, and means rigidly connected to said motorcasing and loosely connected to the projecting end of said armatureshaft for permitting the rotary brush to be manually handled.

In testimony whereof I atiix my signature.

JOHN H. ZIELINSKI.

